Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

Being a freezer I'm concerned about too little time on the vacuum pump. I don't need moisture in the system and a frozen txv orifice.

You don't need to open the system so you don't need the vacuum pump at all?

If the system has valves and ports in the right locations....
use a recovery machine to pump the condenser into the receiver, stop at about 2 psi. Braze the leak. Open the valves. Top up the system. Hand them a bill.

No vacuum pump needed, and down time of less than an hour.

I've fixed leaky condensers a few times like this, and evaps dozens of times (those are really easy since you can use the compressor to pump down.

I'll need to do some cutting around the return bend for room to braze, chop out fins. Lowering cooler temp not a bad idea. Being a freezer I'm concerned about too little time on the vacuum pump. I don't need moisture in the system and a frozen txv orifice.

Might be hard to isolate being the condenser that needs repaired. I don't think he is going to get it all in the receiver. Even if he could how would he isolate it from the condenser without a service valve in between the two ?

Yeah, i just read it again..condenser return bend...then the 4 hour prediction would be right.

Every customer you take for granted today will be someone else's tomorrow.

I would repair the leak. As previously stated, I doubt it will take long enough to lose product. Even if it does, product was going to be lost when it went down again anyway. Just don't eat anything from that freezer.

I had a walk in freezer go down at 9 pm once, the customer did not want to pay overtime to repair it. I returned at 7 am the next morning and it had warmed to 9*F. By the time the repair and proper evacuation were done, the box was at 21*F. Over 12 hours down, with the door closed, no lost product.

You don't need to open the system so you don't need the vacuum pump at all?

If the system has valves and ports in the right locations....
use a recovery machine to pump the condenser into the receiver, stop at about 2 psi. Braze the leak. Open the valves. Top up the system. Hand them a bill.

No vacuum pump needed, and down time of less than an hour.

I've fixed leaky condensers a few times like this, and evaps dozens of times (those are really easy since you can use the compressor to pump down.

Really?

I don't know that I would agree with this - but obviously it has worked for you in the past.

"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield